then the program just waits at that line, I guess not receiving any input from the port. Even if I write to that file using a text editor on my PC, then save and close the file, nothing happens in my STOS program.

So I guess my questions are - has anyone ever got 2-way communication happening over the serial port in STOS? Am I using the port incorrectly in STOS?

And can anyone suggest a better way of sending & receiving data to a program running in Steem?